Quote:
Originally Posted by Zach.Type/RS
I use three spacers on my ball diff now.Your making me worry now that I have it too tight!
I was using the out of the box set up on my ball diff and that was too loose and I eventually went to one and I didn't like that at all. I was tinkering with mine before I actually read the setting sheet.
With the three I am doing good.
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Wow, you must be on xspeed with tiny gear or something. First let's be clear on the count cause it is easy to mess up. The plastic piece that goes next to the little white clip looks just like the spacers but has a ridge. Do not count this as a spacer. The stock ball diff comes with the middle setting and it is 2 spacers and is too tight (except may be good for very high traction with xspeed motor and/or lower gearing). We finally figured out that the motors lack so much torque that even one spacer _can_ be heavy. But one spacer seems pretty dialed and we are on RCP and it is quite tacky. Another thing that happens is ballooning tires causing weird diff action. We have started gluing our tires on the wheels too. TIP: if you want to get Kyosho metal shim set you can totally fine tune the spring tension. They come .1mm, .2mm, and .3mm in the kit and the stock plastic spacers are roughly 1mm thick.
Now even with all of the fine tuning hours, we ended up sticking with 1 spacer always and we do all of our diff tuning with various lubes. The rotating mass of a dNano is sooo lightweight, the diff lube and even the dirt have a greater effect on the action than anything else. Sanding the diff rings down with like 1200 grit and using different shock oils does absolute wonders for this diff!!!
Don't believe me, give it a try. Forgetting ring sanding for the quick experiment, disassemble and clean diff pieces, balls, spur. Now put a very light amount of standard diff lube (I have tried AE red, AE black, Losi, CRC, Tamiya, and a couple others). Now reassemble with 1 spacer and test. Now take it all apart again and clean. Rebuild with light coat of 20wt shock oil (AE oil is heavier so like 10wt if using AE). Now reassemble with one spacer again and try it. Night and day, eh? Then if you throw some spiffy polished rings at the shock oil setup, it will start feeling like a ball diff should.
Quote:
Originally Posted by Zach.Type/RS
Fraz, are you working at a HobbyTownUSA if so do you have the 3P Infield track at your store? If not what are you running on? Its bound to be RCP right?
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Yeah I don't work or run at HT and primarily run RCP. The folks running the track up there all know me though as we have raced together lots over the years. However, my main dNano race buddy races with pretty much the same setup on the carpet track in Hong Kong on a regular basis as he travels there for business a lot. We are both accomplished racers of various scales so we bring a lot of tuning experience to the table. We bounce lots of ideas off each other and have some cars that really work well... but like NanoTrax said, it takes a good amount of effort. If you have specific behaviors or questions, post 'em up. I am sure we can figure it out.
Btw Zach, I have raced a few nitro onroad races out in your neck of the woods with
http://www.rcrcnt.com/ a number of years ago. Of course this was before they got their permanent track built. Would love to come run again someday. Nice group of people if ya ever want get into nitro.